We plan to investigate the nature of particle accelerators in unidentified GeV gamma-ray sources with the aid of a comprehensive, automated multi-wavelength (MW) analysis tool we developed. We focus on unidentified 4FGL-DR4 sources (see the visualization of 4FGL-DR4 catalog at this website) that have been observed by Chandra Source Catalog v2.0. As the result of this project, we expect to
We collected multwavelength properties of all X-ray sources in 109 unidentified 4FGL sources using the Chandra X-ray Source catalog and multiwavelength properties from Gaia-DR3, 2MASS, and WISE catalogs. We used the machine-learning approach implemented in our MUWCLASS pipeline (see e.g., Yang et al., 2022), which is available at MUWCLASS GitHub Repository. The pipeline relies on the training dataset of ~3,000 X-ray sources that have known astrophysical types (currently these are LM-STAR, HM-STAR, YSO, AGN, LMXB, HMXB, CV, NS), available at this visualization website. We used this pipeline to classify 1908 X-ray sources whose classifications are provided in the table below.
This work is supported by the National Aeronautics and Space Administration (NASA) through the Astrophysics Data Analysis Program (ADAP) award 80NSSC19K0576.
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and with Significance greater than: 3 |
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Aladin-Lite Visualization Window
Summary PanelThe (Classification) Summary panel shows a summarized information of the 4FGL-DR4 source, the area covering fraction by the X-ray observations used in CSCv.20, and the classifications for all sources and confident classifications of significant sources or bright sources, as well as comments if available. Interactive Table
(Classification) Summary |
| 2CXO_Name | FGL | GLON | GLAT | Class | CT | S/N | Fb | Fs | Fm | Fh | HR_hms | HR_ms | HR_hm | P_inter | P_intra | Nobs | Counts | PL Γ | Δlog10(Z) | kT_MK | Δlog10(Z) | kT_BB | Δlog10(Z) | log10(Nh) | log10(Nh_LAB) | Gmag | BPmag | RPmag | Jmag | Hmag | Kmag | W1mag | W2mag | rgeo | RPlx | PM | epsi | ruwe | FGLCOOR | G |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| J005806.2-460419 | J0058.3-4603 | 299.3772577 | -71.0102805 | AGN | 0.45 | 7.49 | 2.27e-13 | 8.10e-14 | 4.33e-14 | 1.03e-13 | -0.09 | -0.30 | 0.41 | 0.47 | 1.0 | 76.8 | 2.96+0.59-0.52 | -2.45 | 1.52+0.27-0.18 | 0.00 | 0.40+0.05-0.046 | -4.15 | 20.49+0.58-0.91 | 20.16 | 20.50 | 20.64 | 19.58 | 15.35 | 15.15 | 2219 | -0.3 | 0.00058 | 0.00 | 1.00 | 14.5904 -46.056 | Y |